Analysis of the accelerated crucible rotation technique applied to the gradient freeze growth of cadmium zinc telluride

摘要: Abstract We employ finite-element modeling to assess the effects of accelerated crucible rotation technique (ACRT) on cadmium zinc telluride (CZT) crystals grown from a gradient freeze system. Via consideration tellurium segregation and transport, we show, for first time, that steady growth tellurium-rich melt produces persistent undercooling in front interface, likely leading morphological instability. The application ACRT rearranges flows transport but, contrast conventional wisdom, does not altogether eliminate melt. Rather, much more complicated picture arises, where spatio-temporal realignment undercooled may act locally suppress A better understanding these mechanisms quantification their overall will allow future optimization.